Impact type model water turbine tail water chamber maintenance man-entering door device

Abstract

The utility model belongs to the technical field of water turbine tail water chambers, and particularly relates to an impact type model water turbine tail water chamber maintenance man-entering door device. According to the technical scheme, the mandoor device for overhauling the tail water chamber of the impact type model water turbine comprises a tail water chamber main body, and a mandoor hole serving as a personnel equipment channel during installation, debugging and overhauling is formed in the side face of the tail water chamber main body; a man-in door for opening and closing the man-in door hole and observing the flow state of water flow in the runner chamber in the test process is mounted at the man-in door hole, and the man-in door is made of a transparent material. The utility model provides a mandoor device for maintenance of a tail water chamber of an impact type model water turbine.

Description

Technical Field

[0001] The utility model belongs to the technical field of water turbine tailwater chambers, in particular to an inspection and maintenance access door device for an impact-type model water turbine tailwater chamber. Background Art

[0002] A Pelton turbine is a hydraulic machine that converts the kinetic energy of high-speed water into rotational mechanical energy. The tailrace chamber of a Pelton turbine primarily collects the water flowing out of the runner and directs it to the tailrace tank. Hydraulic testing of Pelton turbine models involves numerous tests and a complex testing process. During testing, operators must repeatedly install and debug the test equipment within the water distribution ring.

[0003] The existing solution requires the removal of the runner chamber downstream of the water distribution ring pipe before the installation personnel and equipment can operate the relevant equipment in the water distribution ring pipe. The process is complicated and time-consuming. Utility Model Content

[0004] In order to solve the above problems existing in the prior art, the purpose of the present utility model is to provide a maintenance access door device for the tailwater chamber of an impulse model turbine.

[0005] The technical solution adopted by this utility model is:

[0006] A maintenance access door device for the tailwater chamber of an impulse model turbine comprises a tailwater chamber body. A side of the tailwater chamber body is provided with an access door hole serving as a passage for personnel equipment during installation, commissioning, and maintenance. An access door is installed at the access door hole for opening and closing the access door hole and observing the flow state of water in the runner chamber during testing. The material of the access door is transparent.

[0007] The entrance door of the utility model not only serves as a personnel equipment passage during installation, debugging and maintenance, but also can be used to observe the flow state of water in the runner chamber during the test process.

[0008] The lightweight access door facilitates access to the runner chamber for model turbine installation and commissioning, improving installation and commissioning efficiency. Existing solutions, however, require the removal and hoisting of heavy test equipment, such as the tailrace chamber downstream of the distribution ring pipe, before personnel and associated equipment can operate the test equipment within the distribution ring pipe. This complicates the installation process and requires large lifting equipment for disassembly and installation of the tailrace tank.

[0009] The entrance door of the utility model is made of transparent organic glass, through which the flow state of water in the tailwater chamber can be directly observed.

[0010] As a preferred solution of the present invention, the material of the entrance door is organic glass.

[0011] As a preferred embodiment of the present invention, the tailwater chamber body has a cross-sectional shape of a regular polygon. To ensure that the water flowing out of the runner flows into the tailwater chamber unimpeded, the tailwater chamber cross-sectional shape of the Pelton turbine model test device is usually a regular polygon with the same number of sides as the number of nozzles.

[0012] As a preferred solution of the present invention, the cross-sectional shape of the tailwater chamber body is a regular hexagon.

[0013] As a preferred solution of the present invention, the entry door hole is arranged on one of the planes on the side surface of the tailwater chamber body, the shape of the entry door hole is rectangular, and the shape of the entry door is rectangular.

[0014] As a preferred embodiment of the present invention, the diameter of the inscribed circle of the runner chamber main body cross section is D, the number of sides of the regular polygon of the tailrace chamber main body is n, and the width of the entrance opening L = 0.45D × tan(180° / n). The number of sides n of the regular polygon of the tailrace chamber main body is usually 4, 5, or 6.

[0015] As a preferred solution of the present invention, the height of the entrance hole H=0.5D.

[0016] As a preferred solution of the present invention, the minimum width and minimum height of the entrance door opening are not less than 0.6m.

[0017] As a preferred solution of the present invention, a tailwater outflow channel is further connected to the side of the tailwater chamber body.

[0018] As a preferred solution of the present invention, the entry door completely covers the entry door hole.

[0019] The beneficial effects of the utility model are:

[0020] The entrance door of the utility model not only serves as a personnel equipment passage during installation, debugging and maintenance, but also can be used to observe the flow state of water in the runner chamber during the test process. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural diagram of the utility model;

[0022] Figure 2 It is the main view of the utility model;

[0023] Figure 3 It is a top view of the utility model;

[0024] Figure 4 It is an assembly drawing of the utility model and the water distribution ring pipe.

[0025] In the figure: 1- tailwater chamber main body; 2- entrance door; 3- tailwater outflow channel; 11- entrance door hole. DETAILED DESCRIPTION

[0026] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without inventive effort are within the scope of protection of the present invention. It should be noted that the embodiments of the present invention and the features therein may be combined with each other unless there is a conflict.

[0028] like Figures 1 to 4 As shown, the maintenance access door device for the tailrace chamber of a Pelton turbine model of this embodiment includes a tailrace chamber body 1. A side of the tailrace chamber body 1 is provided with an access door hole 11 serving as a personnel equipment passage during installation, commissioning, and maintenance. An access door 2 is installed at the access door hole 11 for opening and closing the access door hole 11 and observing the flow state of the water in the runner chamber during the test. The material of the access door 2 is transparent.

[0029] The side of the tailwater chamber body 1 is also connected to a tailwater outflow channel 3 .

[0030] The entry door 2 completely covers the entry door hole 11.

[0031] The entrance door 2 of the present invention not only serves as a personnel equipment passage during installation, debugging and maintenance, but also can be used to observe the flow state of water in the runner chamber during the test process.

[0032] The light-weight entry door 2 facilitates access to the runner chamber for model turbine installation and commissioning, improving installation and commissioning efficiency. Existing solutions, however, require the removal and hoisting of heavy test equipment, such as the tailrace chamber downstream of the distribution ring pipe, before personnel and associated equipment can operate the test equipment within the distribution ring pipe. This complicates the installation process and requires large lifting equipment for disassembly and installation of the tailrace tank.

[0033] The entrance door 2 of the utility model is made of transparent organic glass, through which the flow state of water in the tailwater chamber can be visually observed.

[0034] Wherein, the material of the entrance door 2 is organic glass.

[0035] It should be noted that the cross-section of the tailwater chamber body 1 is a regular polygon. To ensure that the water flowing out of the runner flows into the tailwater chamber without obstruction, the tailwater chamber cross-section of the impulse turbine model test device is usually a regular polygon with the same number of sides as the number of nozzles.

[0036] In this embodiment, the cross-sectional shape of the tailwater chamber body 1 is a regular hexagon.

[0037] The entry door hole 11 is provided on one of the planes on the side of the tailwater chamber body 1 . The entry door hole 11 is rectangular in shape, and the entry door 2 is also rectangular in shape.

[0038] The diameter of the inscribed circle of the runner chamber main section is D, the number of sides of the regular polygon of the tailrace chamber main body 1 is n, and the width of the entrance hole 11 is L = 0.45D × tan (180° / n). The number of sides of the regular polygon of the tailrace chamber main body 1 is usually 4, 5, or 6.

[0039] The height of the entrance hole 11 is H=0.5D.

[0040] The minimum width and minimum height of the entrance door opening 11 are not less than 0.6m.

[0041] It should be noted that a sealing structure is provided between the entry door 2 and the tailwater chamber body 1 to prevent water leakage. The entry door 2 is installed on the outer wall of the tailwater chamber body 1 by bolts.

[0042] The present invention is not limited to the above-mentioned optional implementation methods. Anyone can derive various other forms of products under the inspiration of the present invention. However, no matter what changes are made in the shape or structure, any technical solution that falls within the scope defined by the claims of the present invention shall fall within the scope of protection of the present invention.

Claims

1. A maintenance access door device for the tailwater chamber of an impulse model turbine, characterized by: The invention comprises a tailwater chamber main body (1), a side of which is provided with an entry door hole (11) serving as a personnel equipment passage during installation, debugging and maintenance, and an entry door (2) is installed at the entry door hole (11) for opening and closing the entry door hole (11) and observing the flow state of water in the runner chamber during the test process, and the material of the entry door (2) is a transparent material.

2. The Pelton turbine tailwater chamber maintenance access door device according to claim 1, characterized in that: The material of the entrance door (2) is organic glass.

3. The Pelton turbine tailwater chamber maintenance access door device according to claim 1, characterized in that: The cross-sectional shape of the tailwater chamber body (1) is a regular polygon.

4. The Pelton turbine tailwater chamber maintenance access door device according to claim 3, characterized in that: The cross-sectional shape of the tailwater chamber body (1) is a regular hexagon.

5. The Pelton turbine tailwater chamber maintenance access door device according to claim 3, characterized in that: The entry door hole (11) is arranged on one of the planes on the side of the tailwater chamber body (1), the entry door hole (11) is rectangular in shape, and the entry door (2) is also rectangular in shape.

6. The Pelton turbine tailwater chamber maintenance access door device according to claim 5, characterized in that: The diameter of the inscribed circle of the cross section of the runner chamber body is D, the number of sides of the regular polygon of the tailwater chamber body (1) is n, and the width of the entrance hole (11) is L=0.45D×tan(180° / n).

7. The Pelton turbine tailwater chamber maintenance access door device according to claim 6, characterized in that: The height of the entrance hole (11) is H=0.5D.

8. The Pelton turbine tailwater chamber maintenance access door device according to claim 7, characterized in that: The minimum width and minimum height of the entrance door (11) are not less than 0.6m.

9. The Pelton turbine tailwater chamber maintenance access door device according to claim 1, characterized in that: The side surface of the tailwater chamber body (1) is also connected to a tailwater outflow channel (3).

10. The Pelton turbine tailwater chamber maintenance access door device according to any one of claims 1 to 9, characterized in that: The entry door (2) completely covers the entry door hole (11).

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